23722 has 8 divisors (see below), whose sum is σ = 36900. Its totient is φ = 11424.

The previous prime is 23719. The next prime is 23741. The reversal of 23722 is 22732.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22201 + 1521 = 149^2 + 39^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 23696 and 23705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147 + ... + 262.

2²³⁷²² is an apocalyptic number.

23722 is a deficient number, since it is larger than the sum of its proper divisors (13178).

23722 is a wasteful number, since it uses less digits than its factorization.

23722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440.

The product of its digits is 168, while the sum is 16.

The square root of 23722 is about 154.0194792875. The cubic root of 23722 is about 28.7331848742.

Subtracting from 23722 its reverse (22732), we obtain a triangular number (990 = T₄₄).

The spelling of 23722 in words is "twenty-three thousand, seven hundred twenty-two", and thus it is an iban number.